Home / 687,544.14-1,031,365.89-287,782.68

Finding the Fourth Proportional to 687,544.14, 1,031,365.89 and 287,782.68

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Solution

The fourth proportional to 687,544.14, 1,031,365.89 and 287,782.68 is: 431,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,544.14 : 1,031,365.89 = 287,782.68 : x
  2. Step 2: Convert to fraction form
    687,544.14/1,031,365.89 = 287,782.68/x
  3. Step 3: Cross multiply
    687,544.14x = 1,031,365.89 × 287,782.68
  4. Step 4: Simplify right side
    687,544.14x = 296,809,239,884.79
  5. Step 5: Solve for x
    x = 296,809,239,884.79/687,544.14
  6. Step 6: Final answer
    x = 431,694.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.